Charles



(No Model.)

M. GANDY 8v C. S. BRITTAIN.

- OIL PRESS MAT. No. 244,121. Patented\Ju1yl2,188l.

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UNITED STATES PATENT Tirreno MAURICE CANDY AND CHARLES S. BRITTAIN, OF LlVERPOOL, COUNTY OF LANCASTER, ENGLAND.

OIL-PRESS MAT.

SPECIFICATION forming part of LettersPatent No. 244,121, dated July 12, 1881.

Application filed July Q2, 1880. (No model.)

To all whom it may concern:

Be it known that we, MAURICE GANDY and CHARLEs Srncrr BRrrfrAIN, both subjects of Great Britain, and both of Liverpool, in the county ofLancaster, in that part of the United Kingdom of Great Britain and Ireland called England, have jointly invented certain new and useful Improvements in and relating to Envelopes or lWrappers used in the Manufacture of ro Oil-Cake; and we do jointly hereby declare that the following is such a full, clear, and exact description of theginvention as to enable others 'skilled in the art to which it appertains, or with which it is most nearly connected, to

make and use the same, reference being had to the accompanying drawings, making part of this specification, and to the gures and letters of reference marked thereon.

Our invention consists of two parts: first,-

` 2 5 nous matter, the envelope and wrapper being formed together in one piece, as described in the specification of United States Letters Pat ent No. 224,135, dated February 3, 1880, granted to Charles Speck Brittain and Maurice Gan- 3o dy, in which corrugations were formed in the envelope or wrapper by ribs of rope, wood, or like material. The corrugations, as is well known to the trade, are formed either in the plate of the press or in the envelope, for the 3 5 purpose of preventing the seed and other matter under treatment from squirting out of the sides of the cake when pressure is applied.

Our present invention consists of a lining or stung of perforated, indented, or net-work 4o material, (see A, Figs. l, 2, 3, 4, and 5 of the drawings.) B, Figs. 1 and 3, 'is the lining, of woolen cloth. ,C is the:outside backing, of cotton cloth, of an envelope or wrapper made in accordance with Patent N o. 224,135, before referred to. The packingA may be of cotton belting punched with holes, as shown at Fig. 2, or indented, as shown at Fig. 3, or formed as a grating, as shown at Fig. 4, or of compressed paper with similar perforations or indentations,

or of wood or other material having indenta- 5c tions or perforations, or of net-work of rope or cord, as shown at Fig. 5. This perforated, indented, or net-work lining is placed between the outer cover, C, and the inner lining, B, of the envelope or wrapper, as shown at Figs. 1 55 and 3, and takes the place of, and is in substitution of, the corrugations formed in the envelope or wrapper, asdescribed in the specification of Letters Patent No. 224,135, before referred to, or may be used in conjunction therewith. 6o

In the further carrying out of our invention the perforations, indentation s, or network may be formed in the cloth C or B, either or both of them, during the weaving ot' cloth, in manner known in the art of weaving.

The object ofconstructin genvelopes or wrappers with perforated, indented, or net-work lining, or with the cloths of which the envelope or wrapper is composed, similarly constructed, is to improve upon the corrugated system, and 7o thus prevent both lateral and longitudinal squirting of the seed or other material during compression.

Second, of an improved method o'r process of making an envelope or wrapper. This part 7 5 of our invention relates to so manufacturing envelopes and wrappers for use in the extraction of oil by pressure from linseed and other oleaginous matters that such envelopes or wrappers will not give out unevenly or distort 8o when subjected to pressure of the hydraulic press.

Hitherto it has been customary to manufacture such envelopes or wrappers of a cloth, either cotton or woolen, having its warp of auni- 8 5 form strength throughout; but it is found, in practice, that the center ofthe envelope or wrapper is subject to much greater pressure than the sides thereof, and therefore is the rst part to show signs of weakness and wear. Our object 9o is to remedy this evil, and thereby prolong the life or use of the envelope or wrapper. We accomplish this object in either of the following ways:

First. Forexample,in combined envelopes or wrappers, such as those constructed under Letters Patent No. 224,135, before referred t0, we use woolen cloth for the inside of the envelope,

of which Fig. 6 is an example, such woolen cloth being Woven with its central warps, E, for a space equal to about one-third of the width or breadth ofthe envelope, of yarn or cord from ten to fifty per cent. stouter than the yarn or cord which forms the sidesF of the cloth. We need not describe the process of weaving, as such is Well known to skilled weavers. Where cotton duck is used for the outside cover of the envelope, the central Warps, E, of the cotton duck may be also ten to fifty per cent. stouter than the side warps, F,`of the cloth, in manner similar to the woolen cloth before described. In the construction of the envelope the woolen cloth, before described, and the cotton cloth, before described, may be used together, or they may be used separately with ordinary woolen cloth or cotton cloth, as the case may be, the result being the central strengthening of the envelope or wrapper to resist the uneven pressure exerted in pressing oil-cake.

Second. In the manufacture of envelopes or wrappers, as before described, We ei'ect the strengthening of the wrapper or cloth by stitching a central strengthening-band, E, Fig. 6, on the wrapper or cloth before forming it into the envelope. This strengthening-band E may be of woolen, cotton, or other materialas applied to the outer or cotton cloth.

Third. We effect the strengthening of the cloth (being the woolen cloth or the cotton cloth) by forming the cloth of two narrow cloths arranged to overlap and be seamed and stitched down the center.

In the further carrying out of our invention, and in the manufacture of envelopes or wrappers, such as those described in the specification of Letters Patent No. 224,135, before referred to, we produce a trade-mark letters, device or devices by inserting cotton cloth or other suitable material, which has been cut out to the required form, such as shown at Fig. 7. The device so form ed is placed between the folds or cloths of which the envelope or wrapper is composed, and in the manufacture of the oilcake the device is printed on the cake in relief.

What we claim, and desire to secure by Letters Patent, is-

l. An envelope or wrapper used in the extraction of oil by pressure from seeds and other oleaginous matter, possessing the following composition andfeatures, viz alining or stuifing of cotton belting, paper, wood, or other material which is perforated, indented, or networked, in combination with an outer cover and an inner lining, to prevent longitudinal and lateral squirting of the seed when under pressure; an inner lining of woolen cloth Woven in plaids, or formed with indentations or network in the weaving of the cloth, in combination with an outer or cotton cloth, to prevent longitudinal as well as lateral squirting of the seed when under pressure 5 an outer cover of cotton cloth, formed with perforations, indentations, or net-Work in the weaving of the cloth, in combinationwith an inner woolen cloth, to prevent longitudinal as well as lateral squirting of the seed when under pressure.

2. 1n the method or process of making an envelope or wrapper for use in the extraction of oil by pressure from linseed and other oleaginous matter, the forming of the cloths of which such envelopes or wrappers are made with the central warps of the cloth stouter than the side warps thereof, as set forth, and for the purpose stated in the foregoing specification.

8. An envelope or wrapper for use in the extraction of oil by pressure from seeds or other oleaginous matters, possessing the following features, viz: a frame or body composed of indented, net-worked, or perforated material, covered with an outercoating and an inner lining of `Woven material, as described, to preventlateral and longitudinal squirting out of the seeds, and having a eut-out7 device of flexible fibrous material inserted between the folds of the wrapper or envelope, to conform to the shape of the cake and leave a relief impression upon the surface after pressure, as described.

MAURICE GANDY. [It 8.] CHARLES SPECK BRITTAIN. [L S.]

Witnesses:

JOHN ECLERE BROWN, FREDERICK JOHN GHEESBROUGH,

Both of Lioeijpool, England. 

